You hold up elevator to start your taxi ..It holds the tail down so you can steer and keeps you from noseing over..You get your self lined up straight holding up elevator and advance the throttle , as you begin to pick up speed you release the up elevator and the tail will lift off the ground .At this point you will be steering with the rudder and you need to be ready to correct your direction a bit...but be gentle...Now you ease back on the stick and you are in the air... It takes a bit of pratice to do it rite but no more than taking off with trike gear..just a bit different...I find it easier in some ways.. (Edit . Each airplane is different also...Cubs can be a bit harder because they are short and ground loop easily...Tigers are easier because they are a bit longer )